Turret machine for metal working



De'c. 3,1, 1929. c. A. CORNELL 1,742,135 TURRET MACHINE FOR METAL WORKING Filed Sept. 1l.. 1925 8 Sh`e ets-Shee't A 1 Dec.v3l, 1929.` c. A. fcommu. l 1,742,135

TURRET MACHINE FOR METAL WORKING Filed sept. 11. 1925 sheets-sheet 2 'Deea 31, 1929. c. A. CQRNELL' TURRET MACHINE FOR METAL WORKING Filed sept. 11. 1925 s sheets-sheet 4 Dec. 3l, 1929. c. A. CORNELL y TURRET MACHINE FOR METAL WORKIG Filed Sept. 11. 1925 8 Sheets-Sheet 5 w M attozmn Dec. 31,"i929- C. A. CORNELL v TURET MACHINE FOR METAL WORKING v Filed sept. 1'1

. 1925 'a sheets-sheet 6 /80 l f/W ,f7 /75 /s/f` l /76 DmV 311, 1929.

Filed sept. 11. 1925 a sheets-sheet 7 lllll TURRET MACHINE FOR METAL WORKING Filed sept. 11, v1925 s sheets--shee"al a f2 I @Z025 W y 7j /I 'AW /34 /a /aa\m Patented Dec."31, 1929 UNITED STATES GHAUNCEY A. CORNELL, or nn'rnorr, MICHIGAN TURBET MACHINE FOR METAL WORKING Application led September 11, l19:25. Serial No. 55,858.

The invention relates to 'metal working anclhas among its objects to provide an improved method and apparatus for machining drop forgings, castings, etc. A 4further feature of the invention resides in providing a plurality of machines simultan'eousl operable under a common' control for per orming various operations on the.

work as the latter is moved successively from machine to machine. Thus, I have provided a work carrier in the form of a rotatable table upon which is mounted a plurality of jaws for clampin the work. This table is fitted with an` in exing and rotating apparatus whereby the table is given successive movements for a predetermined arc to successively move the work to the various machines arranged adjacent and around the periphery of the table. Thus, at each of the points of indexing the machinesY are caused v to operate on the work, each machine performing one' of a series of operations which go to make up a complete job.

A further feature of my invention resides in the controlmeans for renderingthe operations of the machines automatic, each machine performing its` operation and coming to rest awaiting the next indexing of the table y a Another object resides in the vprovision of a lubricating system for supplying lubricant to the machines and work.

With these and other objects in View, the invention lI 'esides in the novel features of ments of parts as more fully hereinafter described and claimed.

Referring to the drawings'in which like` Figure 5 is a fragmentary elevation view construction and combination and arrangeillustrating in detail the locking means for v the table indexing mechanism;

Figure 6 is an elevation View showing the means for indexing the table from station to station;

Figure 7 is a view 'in elevation illustrating a typical machine for performing `one of the series Vof operations on the work; yFigure 8 is a plan view of this machine;

Figure 9 is a det-ail view along 9-9 of Figure 8;

Figure l0 is a detail view in elevation illustrating one form 'of connection between the horizontally sliding table and the operating arm therefore;

Figure 11 is a fragmentary sectional view in elevation illustrating another of the series of Operations upon the work; j

Figures 12 to 22 inclusive illustrate the successlve operations performed by the machinesvon a connecting rod;

Figure 21a being aside elevation View of the lower part of the connecting rod shown in Figure 21;

Figure 23 is a transverse view through another of the machines illustrating another type of machine;

Figure 24 is anhelevation View of the air Y and lubricant supply tanks;

Figure 25'is a plan View of the foundation member 'or supporting base for the machines; and

Figure 26 is a sectional view in elevation along 26e-26 of Figure 25.

In the drawings, reference character A represents Vthe table'supporting base provided with thesupporting legs 10 and preferably cast for convenience in shipping vand handling in three sections which, when assembled, are bolted together as shown at 11.

The base A is furtherprovided with a V- groove 12 Iwhich extends circumferentially around the base. At a plurality of points, preferably three, as shown in Figure 3, I have provided the pockets 13 for receiving the bearing supporting members 14 which mount the roller bearings 15, the latter being provided with a V-groove for supporting engagement with thetable-as will be presently apparent. The members l are verticallyadjustable in the pockets 13 and for positionl -ing these vmembers at the desired height I' -ing cast in four sections whereby the joints 18 will lie intermediate the joints 11 of the base A so as not to break even with these joints of the base. The table is provided with a downwardly extending V-projection 19 for engagement in the V-slot 12 of the base A. lThe projection 19 further engages the bearings 15 and by adjusting these bearings to the proper height the weight of the table may be relieved from the base ,and largely V placedon the bearings to relieve to a large extent the friction between the projection 19 and the `groove 12. For further facilitating the movement of the table, the pockets 13 may be filled with a suitable lubricant so that as the rollers 15 revolve the lubricant will be carried to the V-projection 19 whereby the lubricant will be distributed around the groove 12. The table B is further provided with a circumferential recess 20 for receiving at the desired circumferentially spaced points the indexing sections 21. The number of these indexing sections will correspond with the number of stations desired to perform the successive operations on the work as will be presently apparent. The sections 21 are provided with the wedge-shaped grooves 22, the side walls of the grooves being also tapered inwardly and downwardly toward each other as shown at 23'.v Referring to Figure 5 I have shown in detail the locking means engageable successively with the indexing members for holding the table relatively stationary while the various machines or machine unitsl are performing their operations on the work. 24 represents a locking member which is arcuate and whichis provided with a wedge-shaped outer portion 25, the side walls of which taper outwardly and upwardly for wedging engagement with the tapered walls 23 of the recessed portions 22. The locking member 24 is pivotally mounted at 26 ina support 27, the member 24 being rotated about the pivot through an arm 28 actuable by a rod 29. The rod 29 ismoved by a piston 30 controlled by means described hereinafter. The piston 30 is operable within the cylinder 31, the latter being'pivoted at 32 to the base 33 of the support 27. Any suitable fluid under pressure, such as air may be used to move the piston 30 in its opposite directions to cause the locking member 24 to engage the recesses 22 or to be disengaged therefrom. 1 v

For moving the table a predetermined amount determined by the spacing of the indexing points, I have provided a bar 34 which may be mounted in a downwardly opening recess of the table as shown in Figures 2 and 6. This bar is provided with the spaced lugs 35 having'the abrupt shoulders 36 at one side thereof andthe inclined sides 37 at the opposite side. For engaging the sides 36 of these lugs to impart a step by step indexing movement to the table I have provided a carriage C comprising a rear section 38 and a forward section 39. These sections are mounted on rollers 40vrotatably guided on the track 41. 42 represents the meeting edgesof the sections 38 and 39 and at this point groove 43 is providedto permit relative movement of the carriage sections. .These sections are further linked together by a link member 44 pivotedat 45 and 46 with the sections 38 and 39 respectively. The rear section 38 is provided with a fork. 47 between which is guided an operating bar 48 of the forward section 49. This latter bar as shown in Figure 6, is preferably curved upwardly for engagement with the lugs 35. For reciprocating the carriage C to impart the step by -step movement to the table B I have provided a cylinder 49 pivoted at 50 to. a suitable support and having therein a suitable piston for operating a piston rod 51 connected at 52 to a radial bar 53. This bar is pivotally mounted at 54, this point preferably corresponding to the center of the ring-shaped table B. The oppositev end of the bar53 is connected to the forward section 39 of the carriage C for reciprocating the same.

Describing the operation of the indexing mechanism for imparting a step by step movement to the table B, a suitable fluid such as compressed air is introduced to the cylinder 49 for operation upon the piston within the same, the controllinfr means for this fluid being described hereinafter. Move` ment offthe piston within the cylinder 49 actuates the rod 51 to move the bar 53 about its pivotal point 54. With the parts as shown in Figure 9, the table B is ready to receive a cycle of the carriage mechanism for moving the same to the next indexing point. The operator first causes disengagement of .the locking member24 from its indexing section 22 and thereafter the fluid is introduced Yto the cylinder 49 for moving the carriage C to the left as shown in Figure 9. The stroke of the piston rod 51 is such that the carriage C will bemoved a distance corresponding to the spacing of the lugs 35 whereby the o er` ating bar `48 will engage-the yinclined ace 37 of the next adjacent lug. As the operating bar slides along this inclined face the bar will be swung about a fulcrumed point which1 lwill be its supporting roller 40. Thus, a

extremity of the bar 48 has passed beyond the incline 37 the weight of the carriage sections and cause them to return to their normal positions, with'the upper shouldered face 54 ing a movement of the carriage C to the right as shown in Figure 9, whereby the table B will b e moved through an are corresponding to the spacing of the lugs 35 and the spacing Y of the indexing sections 21.

With the mechanism as thus far described, it will be noted that I have provided a work carrying table which is adapted to be successively moved throughout predetermined distances withy means for locking or holding the table in its successive points of indexing.

Beforedescribing in detail\the various machines for operating on the work Whichis v carried by the table, I will 4briefly outline in a general way the operation of the system. For purpose of illustration, I have shown in the drawings 12 indexing points for the table B. Thus, in a complete rotation of the table', the latter will be successively stopped and lindexed twelve times. I have, therefore, provided twelve stations or indexing points D and at each of these stations I may provide one or more machine units for performing thel successive operations on the work. Thus, F1 represents the machine unit positioned adjacent the outer periphery of the table B,

this machine being adapted to perform the rst ofthe series of operations upon the work carried by the table. As will be later apparent, each machine may be provided with a twin head or twin mechanism whereby two pieces of work may be simultaneously operated upon the same machine. If desired and as shown in Figure 1, I may provide a second series of machine units arranged at each of 'the machine at this same station, this mathe statinsD around the inner periphery of the ring-shaped table B. Thus, F1 represents the iirst machine of this inner series for performing on the work the first step of chine being the second of the inner series. I have continued these series. of machines around the table B at the various stations or vindexing points whereby the outer series of machines E1 to E11Ainclusive are provided. Corresponding to each of these machmes is a machine of the mner series, these latter machines being re resented at Fto F11 in-.

elusive. The twel th'station D may be left free of machine units so that at this point 'the operator can remove the completely machined articles of Work which have been suc cessively operatedupon by the various ma` is of such a character as'not to require the large number of -stations which I have illustrated, additional loading and unloading stations corresponding to the station D may be provided 4throughout the movement of the work table.

I have provided a plurality of machine units which are provided with suitable heads for performing all of the usual and necessary operations of a machine shop for completely machining drop forgings, castings, etc. AThus as will be presently apparent I have provided means for milling, drilling, counterboring, counter-sinking, boring, tapping, sawing, roaming, grinding, etc., either vertically or horizontally, or at other angles with single or multiple spindles as required. My invention is in noway limited to the machining operations for any article in particular, but is adapted to perform successive machining operations on various cast or forged articles and will be found especially useful where a large number of machining operations are required; For purpose of illustration, I have shown the machines of my system as being adapted to machine the usual drop operations aforesaid may be accomplished, Iy

will point out the various successive machiningv operations which may take place at the eleven stations or indexing points which I have illustrated in Figure 1.

Referring to Figure 12, 55 represents a drop forge or cast connecting rod as it comes from the forge or mold. These connecting rods are placed on the work table B at the loading and unloading station D after the previously machined connecting rods have -been removed by the operator at this station. After the various machines have completed their operations the table B is moved, the distance of one of the stations and tracingthe path of the connecting rods placed on the table at the station D', these rods will be moved to the `first operating station comprising the machines E and F. At this station the machine E drills the holes 56 for later receiving the usual cap bolts as shown in Figure 13. While the machine E is drilling the los i additional forged or cast connecting rod will be moved tothe first station for receiving the same operation by the machines E' and to' machine the connecting rods as shown in Figure 14. Thus, at this station the machine Ez will rough bore the hole 56 as shown at 58. lVhile this machining operation is taking place the machine unit F2 will drill the hole 59 in the opposite end of the connecting rod for later tapping. The next series of operations is illustrated in Figure v15, themachine E3 finishes boring the hole 56 as illustrated at 60, while the machine F 3 drills the hole 61.

At the next station as shown in Figure 16, the machine E4L will spot face the top side of one end of the connecting rod at 62 while themachine F? will ream the hole 63. At the next station illustrated in Figure 17 the machine E5 will spot face the bottom side 64 while the machine F.5 mills the top and bottom cheek of the other end'of the connecting rod at 65. In the next operation as illustrated in Figure 18'the machine E will mill the faces 66 for later receiving bolt4 heads while the machine F countersinks the hole 59 as shown at 67. At the next station the machine ET will reamthe bolt holes as at 68, while the machine F7 saws a slot 69.

Figure 20. illustrates the operations at the vnext station at whiclLthe machine E will slpot face the surface 70 forlater receiving t e bolt ends while the machine F8 taps the hole at 71. At the next station as Shown in Figure 21, the machine E9 mills the bottom of the connecting rod at 72 for forming an oil splashing surface while the machine F9 is idle.' In machining certain articles where the machines are arranged on opposite sides of the path of the article as shown in Figure 1, the machines'on one side may finish their operations'before those on the other side so that one or.,y more of the machines may be idle while those on the other side are completing their operations. I prefer to locate machines at these idle points, however, since when the system is used in connection with other pieces of work, these machines may then be readily brought into operation to perform one of the machining steps. In Figure 21a I have illustrated the character of the milled bottom 72 which is in the nature-of an arch-shaped surface for splashing the oil contained in the usual crank case. To form this surface 72 I prefer for convenience` to provide twovv succcssive operations. Thus, the machine E9" may mill the bottom 72 by a substantially horizontal movement of the milling cutter while the machine E10 at the next station will be yprovided with a radial milling cutter to produce the arch-shaped surface as shown in i Figure 21u. f

At-tlie last machine station, as shown in plished. Referring to Figures -7 vand 8 I have shown such a machine in which 75 is the base journalling the cam driving shaft 7 6-by reason of the bearings 77 and 78. Fixed to this shaft is a gear 79 adapted to be driven by a pinion 80, the latter gear being driven from a shaft 81 through the shaft friction' coupling clutch 82. 83 is a motor for driving the shaft 81 through the 'reduction gearing 84. The clutch 82 and hence the driving connection between shaft 81 and shaft 76 is controlled by a yoke 85 movable with a bell crank lever 86 pivoted at 87 with the depending supporting lug 88. 89 is the other arm of the bell crank 86 and this arm is adapted to be actuated by a clutch cam 90 fixed to the shaft 76. 91 is a spring for returning the bell crank lever to the lower position as shown in Fi re 7 after the high point of the cam 90 has passed the point of contact with the arm 89. 92 represents an electro-magnet adapted to hold the arm 89 in its upper position under the control of the operator as will later be apparent. The arm 89 in its uppermost position is adapted to contact with the core 93 of the electro-magnet. 94 is a member adapted to bridge the. switch points 95 so as to form a circuit in the leads 96 and 97 when the arm 89 is in its raised position for flashing a signal light to advise the operator that the machine` has completed its operation. The majority of operations upon thej work 55 may be accomplished by moving the tool of any machine either vertically, horizontally, or a combination of/these two movements. In order to provide for movements of the tool of this nature, I have incorporated in each' machine a tool head which is capable of both vertical and horizontal sliding movement. Thus, in the typical machine illustrated in Figure 7, 98 is a sliding head capable of'sliding movement toward andfrom the table, this head being mounted for this purpose to slide in the grooves 99. 100 represents the head support which is vertically slidable in the groove 101 whereby the lparts carried by the sliding head 98 will be raised vertically, the sliding head separating from the base 75 along the line 102. For limiting 2,0 by the Operating arm' 113. The..typical `operv v3Q head'from the arm. It will thus be noted P sliding head 98 I have provided a Vcam ,106 removably securedto the shaftv 76. In Figure 7i this cam is shown in dotted lines as in the particular operation illustrated in this ligure, this cam Willnot be used as it is not necessary to verticallymove the tool., In other operations, however, and as hereinafter pomted out 1n connection with Figure 11, 1t is desirable to provide for such vertical movement and in such instances the cam 106 is engageable with a lift od 107 slidable in the bearings 108 and 109 to raise the head 98, the latter being guided in rsuch movement by the sliding of the head support 100 in the slide or groove 101.

For 'imparting a sliding movement to the l head 98 whereby the tool may be lmoved to- Ward or from the Work I have provided a cylinder cam 110 having a cam groove 111 Within Which operates the roller 112 carried lating arm is pivotally mounted at 114 to the base of the machine and as shown in Figure v-7' terminates in an arcuate slotted portion 115 slidably receiving a block 116 which is fixed with the sliding head 98. Adjustable'screws 117 'are preferably :threaded in the arm 113 at the opposite ends ofthe slot and are adapted to abut the block 116 in the opposite movements-of t-he arm 113 for, driving the' sliding that I have provided a llost motion, the

' 'amount of which may be ladjusted-by the screws 117, the latter being locked in any adjusted position by reason of the lock nuts 118. The purpose of this lost motionis to provide various movements of the sliding' head 98 from the same type of cam 110. Thus Where the operation to be performed by any machine varies slightlyfrom the operationpreviously used in connection with the machine, the same cam 110 may be used and the .diil'erence -in movement desired for the head 98 lmay be taken care 'of by the adjusting screws 117. In Figure 7, I have not shown this typical form of operating arm 113 as the operation shown in Figure 17 is such that it is not desirable to providew a sliding movement of the head 98. -In this ligure, the arm 113 is reciprocated freely in a' guide 119 and the upper extremity of the operating arm 113 is bent at 120 to extend across the sliding head 98 terv minating in a yoke 121. 122 is 'a fulcrum point for the portion 120 of the operatin arm 113.

In Figures 7' and 8 I have shown for purpose of illustration the operation described in Figure 13 in connection with the machine E for drilling the holes 56. Figure 8 also illustrates one manner in which the connecting rods 57 are clamped in pairs upon the table B, it being understood that a similar pair of clamping devices are provided at cach oil? the indexing points throughout the circumference oi' the table B. In this figure,

each of the Work clamps or vises G is formed of the complementary parts v123 and 124, the former being fixed With respect to the table B .and the latter being slidable in the slide 125 toward and away from the part 123 to clamp or release the connecting rod 57. In order to clamp the Work between the parts 123 and 124 I have provided a toggle lever arrangement comprising the' toggle levers 126 and 127, these levers being pivoted at 128 to their respective clamp parts 124. The

opposite ends of the toggle levers are hinged at 129 about the pintle 130 which is upstanding from a slide 131 adapted to be guided in the lside grooves 132. 133 represents a hand Wrench pivoted to the bed B at 134 `and engageable with the lugs 135 and 136 ofthe slide whereby the latter may be moved to operate the toggle levers to release or clamp For relatively adjusting the the work. clamping parts v123 and 124 to compensate for minor variationsin the castings I have formed each of the levers 126 and 127 in two parts 137 and 138, these'parts being oppositely threaded and ladapted to be moved toward and from each other by a collar 139.

This collar may be provided with an opening 140 for accommodating a Wrench or actuating-bar. 141 are locknuts for holding the parts of the toggle levers in adjusted osition. '5^ With the Work clamped as shown in Figure 8 and the table properly indexed the Work will be brought by the indexing m'echanism into accurate alignment for operation of the various machines. As shown in Figures 7 and 8, the pair vof connecting rods are positioned for Vdrilling the holes 56, ret'- erence character'142 indicating the drills.k

a movement frm the arm 120 by reason of an -engagement of the yoke 121 with the pin 147.- 148 is a motor carried by the slide 14,5, this motor being provided with a drive shaft 149, the latter being formed with the key slot 150. The shaft-149 has a bearing 151 carried' by the slide 145 and is adapted to drive a bevel 152 through a sliding key 152, these bevels being mounted in bearings 155 carried by the slide 145. vThe bevel 152 is adapted to impart rotary movement tp the drills 142 through these bevels154. To this end thebevels 154 are adapted to drive the bevels 156 through the shaft sections 157 and 158, these sections being relatively axially '153. 154 are bevcls driven from the gea-r 6 maa ist slidable by reason of the sliding parts 159. This sliding joint is preferably covered by a tube o'r sleeve 160. The bevels 156 are adapted to drive the bevels 160, the latter driving the pinions 161 byreason of the pinion 162. The pinion 162 has a bearing 163 in the tool head 144 while the pinions 161 are fixed to the shafts 164, these shafts being adapted to rotate the drills 142. 165 are thrust bearings for absorbing the thrust of the drilling operation. The shafts 164 are provided with a further `bearing 166. For simultaneously sliding the tool. heads 144 in their slides 145 by a movement of the slide 145 I have provided a casting 167 fixed with the slide 145 and to this casting is bolted and doweled at 168 and 169 respectively, a steel facing 17 0. The opposite ends of the facing 170 are slotted at 171 as shown in Figure 9 to receive the shafts 164 and permitting a sliding movement of these shafts in the slot 171 to compensate for the relative movement of the tool heads 144 toward each other with respect to the slide 145 as these slides are moved by the arm 120. Thrust bearings 173 and 172 are rovided on opposite sides of the facingl 0 and lock nuts 174 may be provided whereby a small amount of clearance may be afforded between the facing 170, the lock nuts 174 and the bearingk Describing the operation of the machine i illustrated in Figures 7 and 8, the motor/83 Jlso ` tool heads 144 in their slides 145, thus and the motor 148 preferably continuously rotate. With the parts as shown, in these lfigures, the arm 89 is in its lowered position,

the low point of the cam 90 being in contact with this arm whereby the clutch 82 is estab-l lishing a driving connection between the shaft 81 and the shaft 76. Rotation of the shaft 76 causes the cam 110 to rotate wherebythe arm 113 is slowly reciprocated about its pivot 114. A complete operation of the machine is adapted to take place upon a single rotation of the shaft 76, reduction gearing 84 between the rotor 83 and the gear 79 being adapted to slowly rotate the shaft 76. Movement' of the arm 113 produces a swinging movement of the arm portion 129-about its pivotal portion 122, whereby the slide 145 is advanced toward the table carrying with it the motor 148 and/the facing 170. Movement of the facing 17() causes simultaneous forward movement of the causing thedrills 142 to drill the holes 56 as shown in Figure 13. Because of the angular slides 145 of the tool heads 144 -With respect'to the slide n 145 the shaft sections 157 and 158 will move toward each other. This relative movement is taken care of by the sliding connection 159. During the sliding movement of the tool heads 144 and the slide 145, the motor 148 will operate through the bevels 152; 154 and the gearing carried by the tool heads to rotate thedrills142. a w' Upon a complete rotation of the cam 110 the drills 142 will have completely performed their uoperation and returned to a position sutliciently removed from-the connecting rods 57 to permit rotation of the table B when the latter is indexed. Likewise, upon a complete rotation of shaft 76 the cam 90 will raise the arm 89 into engagement with the core 93 of the electro-magnet 92, whereby the-arm 89 will be maintained in this raised position causing disengagement of the clutch 82 and hence breaking the drive from the motor 83 to the shaft 7 6. The clutch 82 will be kept in its disengaged position until the operator by a control mechanism described hereinafter, releases the electro-magnet 92 whereupon the spring 91 can act to againlower the arm 89. Simultaneous with the raising of the arm 89, the bridging member 94 will establish a circuit across the switch points 95 infthe leads 96 and 97 to flash a light or other signal described hereinafter to advise the operator of the completion of the operation of the machine.

Referring to Figure 11, I have illustrated the operation described in connection with Figure 17 and machine E5 for spotfacing the bottom; side `64 of the connecting rod. This operation involves a vertical and horizontal movement of the head 98 referred to in describin the typical machine illustrated in Figure In Figurell, the connecting rod 55 is shown carried by the clamp G and in this figure I have shown the table B provided with a pair of sub-plates 175 and 176 for protecting the top of the table B. These sub-plates arev device-shown in Figure 10. It should be understood that where the lost motion'is not desired the screws 117 may be advanced sufficiently to contact with the opposite sides of the driven block 116. The head 98 rotatably mounts the facing tool 177, the latter being supported through a thrust bearing 178. Rotation of the tool 177 is accomplished by a worm wheel 179 and worm 180, the latter being rotated through a suitable gearing driven by a motor (not shown) corresponding to the motor 148. Thismotor mazy be mounted directly on the head 98. A recess 181 is provided in the sub-plates 17 5 and 176 to permit vertical movement of the tool 177 to clear the connecting rod 55 and also for feeding the tool upwardly against the work. In this operation, the cam 110 first advances the head the connecting rod to form its facing opera-V tion. During this feeding movement the tool 177 is rotated by the driving worm 180. urThe cams 106 and 110 are suitably designed to properly feed the tool against the work and after this operation is completed the cam 110 operates to withdraw the sliding head 98 and tool 177 to clear the work and the cam 106 permits the downward return movement of the head support 100. The clutch 82 is then disengaged as aforesaid and the machine is ready for the next operation following an `indexing movement of the table.

It will lbe apparent from the machine shown in Figure 7 that the various tools for performing the various operations may befed in any manner desired to perform any of the operations described in connection with Figures 13 to 22 inclusive. As a further 'means of sliding the head 98 and also for -obtaining'a sliding movement ofthe head at various angles, I have provided a modified construction of` machine, as illustrated in Figure 23. In this ligure the operating arm 113 is identical with that shown in Figure v7 and isadapted to drive a block 116 in a manner corresponding with the mechanism shown in Figure 10.- 98 is the sliding head which may mount the necessary tools and driving motor.` This headis slidable in the groove or slide 99 and is formed with `a rack 182 extending longitudinally beneath the top of the head. Meshing with this rack for sliding the head 98 is a pinion 183 fixed with a lift shaft 107 which maycorrespond in function with the shaft 107 as shown in Figure 7. The block 116 is adapted to reciprocate a rack 184 which meshes with the pinion 185 rotatable about an axis 186. The pinion 185 is fixed to rotate with a gear 186', the latter meshing with a pinion 187. Fixed to rotate with this latter gear is another gear 188 adapted to drive a gear 189 having splined engagement at 190 -with the shaft 1,07

A so as to drive this shaft in its various elevated positions. In this type of drive, the arm 113 is adapted to reciprocate therack 184, the latter rotating the shaft 107, through the vcompound reduction gearing. Rotation of the shaft 107 produces a reciprocate-ion of the rack 182 by reason of the pinion 183 whereby the head 98 is caused to slide in the guides 99. It will be noted vthat the direction of sliding of the head 98 can be'arranged at any desired angle with this type of drive so that movement of the tool carried by the head can be made to fall in any predetermined desired path.

I will now describe the controlling means for starting the machines and indexing the work table. Referring toA Figure 5, I have provided a control box 191 mounting a con- 'trol handle' 192 rotatable with a dise 193.

Tliis dise carries the fingers 194 and 195. 196 and 197 are valve controlling members adapted upon rotation to controlthe supply of compressed air or other fluid .to the cylinders 31 and 49 respectively. Each of these controlling members is formed with a yoke 198 to impart a slight rotary movement to the control members as' the disc 193 is ro` tated. 199 is a switch mechanism adapted to control the electro-magnet 92. A meter 200 is' positioned to advise the operator when energy is being supplied to the various electro-magnets 92 of the' machine units. Gages 201 and 202 are adapted to indicate the air pressure in the opposite ends of the cylinder 31. Likewise, the gages 203 and 204 indicate the performance of the 4"cylinder 49. Referring for the moment to Figure 24, I

have shown a compressed air tank 205 adapty p ed to store air under pressure, the supply pipe 206 being adapted to conduct the air to the cylinders 31 and 49, this supply lof air being controlled by movement of the lever 1192. Mounted at a convenient point, such as shown in Figure 24, are a series of indicating devices such as light bulbs 207, oneA bulb being connected in a circuit 96,l 97 with the switch 95 of each machine so that as each machine completes its operation the corresponding light bulb will either light or go out whereby the operator eanbe advised of the completion of the operation of all of the machines. The air tank 205 is preferably located centi-ally of the table B as shown in Figure 1. p

Describing the control for the various machines, as each machine completes its respective operation the corresponding light bulb 207 will'be energized or de-energized as the case may be. Thus, the operator can watch these bulbs and after all of the machines have completed their operations, the table is ready for an indexing movement. At this time the tools of each of the machines have performed their operations and have been withdrawn from-the work by reason of the cams and 106. vLikewise the cams 90 of each machine have raised the arms 89 to disengage the clutches 82 so that each of the machines is inoperative, the electro-magnet 92 serving to maintain the arms 89 in raised position. The operator then grasps the handle 92 and rotates the sameclockwise as shown in Figure 5 to first cause the finger 195 to slightly rotate the valve controlling member 196. This movement of this member'causes a downward y 'movement of the piston 3'0 and serves to with# 'draw the locking member 24 from locking encauses compressed air to be supplied to the cylinder 49 for moving uthe carriage C as shown in Figure 6 for rotating or indexing the table B a distance corresponding to the notches 35 or stations D. After this indexing movement of the table, the operator then moves the 'disk 193 in the reverse direction or counterclockwise as shown in Figure 5, to rotate the valve controlling member 197 in the opposite .direction for supplying compressed air to the opposite end of the cylinder 49 whereby the carriage C is restored to its initial position ready for the next indexing movement. Further movement Aof the disc 193 causes a reverse rotary movement of the valve controlling member 196 whereby compressed air is admitted below the piston 30 for restoring the locking member 24 into locking engagement with the tableB. Still further rotation of the disc 193 causes the finger 194 to engage the switch control 199 whereby each of the electro-magnets 92 of the machines is de-energized. At this time the circuits 96, 97 are broken and the springs 91 of each machine cause the downward movement of the arms 89 to actuate the clutches 82 setting in motion each of the machine units. These units then perform automatically and simultaneously their respective operations and return automatically to their inoperative positions ready for the next indexing movement of the table.

I have also provided a novel oiling system and apparatus /for supplyingmachine and cutting oil to the bearings and other parts of the machine which require oiling and also for supplying cutting oil vto y,the tools` during their operations. To this end I have provided a series of supply tanks 208, 209 and 210 which store machine oil, cutting oil and cutting. compound respectively. The oil is supplied to these tanks by the supply pipes 211, 212 and 213. The oil is conducted v rom thev tanks 208, 209 and 210 by the pipes or conduits 214,215 and 216 respective- 1 which preferably extend radially rom the res ective supply tanks to a point above the ta le whese these pipes are .arranged horizontally adjacent each other so as to extend circumferentially above the table B as shown in Figure 7. From these conduits the oil may be led at the various points above the machines and work to supplyv the same to the cutting tools and also to the mov lng parts of the machine. "---'I`hus, as shown in Figure 7, the oil from the machine oil supply pipe 214 ma be conducted through the branch pipe 214 for supplying machine oil to the cup 217. Any number of these cups may be provided for each machine conveniently located with respect to the various parts to be oiled. .For example, the oil from the cup' 217 may be vconducted through the branches 218 to oil the various parts of the 5 machine, as for example, the bearings 77,

shown for purpose of illustration in Figure 7 It should be understood that any number of the branch pipes 214 may be provided throughout the length of the pipe 214 to completely oil the machines andfor supplying a constant iow of oil to the machine parts. In Figure 7 I have also shown an oil cup 219 with a sight feed 220, the oil being supplied to this cup through the branch conduit 221 which may be a further branch of the pipe 214. If desired valves 222 may be provided for regulating the liow of oilv from the various branch pipes to the machine parts. 223 is a branch pipe for conducting the machinel cutting oil trom the supply pipe 215 to a point 224 conveniently located above the tool 142 for supplying cutting oil to the tool during the operation of the same. 225 represents a valve controlling the flow of oil in the pipe 223. 226 is a support or guide for the lower end of the pipe 223 and this support may be carried by any convenient portion of the machine such as the jig 143. A pipe similar to pipe 223 may be provided for conducting cutting compound from conduit 216 to desired points. The air supply pipe 206 is also pref# erably arranged adjacent the oil supply pipes 214, 215,and 216 as shown in Figure 7. It is understood that suitable conduits are branched from this 'air pipe for supplying the' air to the cylinders 31 and 49. For convenience I 'also prefer to group theV various wires of the' circuits indicated at 96 and 97 leading to the switch points 95 at a point adjacentthe oilsupply pipes and as shown in Figure 7, I may arrange all of `these wires in the form of a single cable 227.

I have also provided means for catching the excess oil which drips from the tools and the various machines and returning this lexcess oil tothe tank .210 for distribution through the pipe 216 for using the same as a cuttin oil, for other convenient purposes. To tlns end I have provided a foundation member or supporting base 228 for the machine as shown il'i'Figures 25 and 26. This foundation is adapted to support the outer common compound well 233 where the excess lubricant from all of the machines and tools is accumulated. The' lubricant from this well is adapted to be conducted through the supply pipe 213 to the cutting compound reservoir 210.

Wl'lile it is believed' from the foregoing. description, the nature and advantage of myv invention Will be'readily understood, I de-4 sire to have it understood that I do not limit myself to what is herein shown and described and that such changes may be resorted to when desired as fall within the scope of the claims.

lfVhat I claim as my invention is e 1. A device for working metal comprising awork holder movable in a predetermined path, means for securing a plurality of pieces l of work on said holder, a plurality of machines, means for indexing the work holder to move the said pieces of work to successive positions for being operated on by said machines, means' for holding the work holder relatively stationary for a predetermined length of time at the points of indexing, said machines bein adapted to operate upon the work during t e said stationary movements of the work holder, means for rendering each machine inoperative upon completion of its operation, and means actuable upon completion of the operation of each machine for indicating the inoperativestate of the respective machines.

2. A device for workingmetal comprising a rotatable ring-shaped work table, meansor indexing the table throughout its rotation, means for lsuccessivelymoving the table between the successive points of indexing, means` forA securing a plurality of pieces of work to the table, a plurality of machines positioned within4 and without said ring-shaped table for successive operations on 'said pieces oi? work, means for rendering each machine inoperative upon completion of its operation, and common means for simultaneously starting each machine upon its operation following an indexing movement of its work holder.

3. A device for 'working metal comprising a work holder movable in a predetermined path, means :tor securing a plurality of pieces of work on said holder, a plurality of machines, means for indexing the work holder 'to move the said pieces of work to successive positions for being operated on by said machines, each of said machines being provided with a tool for operating on said pieces of work, means for simultaneously feeding said tools toward the work for 'operating on `the pieces of work' respectively, and .means for automatically returning the tools to their initial positions upon completion of the respective operations, said two last mentioned means being operable independently of said vWork holder. Y

4. A device for-working metal comprising a work holder movable in a predetermined path, means for securing a plurality of pieces of Work on said holder, a plurality of machines, means for indexing the work holder to move the said piecesof work to successive positions for being operated on successively bysaid machines, a source of lubricant, means Jfor distributing the lubricant from said source to the said'machhines, a base supporting the machines, said base being provided with means 4for conducting the surplus lubricant from the machines, a well for catching the surplus lubricant, and means for conductingthe surplus oil to a supply tank.

l 5. A metal working machine comprising a movablegwork holder, means for clamping the work to the work holder, means forindexing the work holder, said last named means comprising a locking element movable into engagement with the work holder tor holding the same stationary Vbetween periods of indexing, power operated means controlling the movement of said locking element, and power operated means for moving the work holder to index the same, said power operated means being operable independently of the means for actuating said'work holder.

6. Ametal working machine comprising a movable work holder, means for clampingy the work to the work holder, means for indexing the work holder, said last named means comprising a locking element `movable into engagement with the work holder for holding Y,

the same stationary between periods of indexing, power operated means controlling the movement of said locking element, power operated means vfor moving the work holder to index the same, and a common control for both said power means, operable independently of the control means for said work holder.

yion

7. A device for working metal comprising an annular worlc table having an annular V- shaped rib on the underside thereof, a supporting member for said table having an annular groove registering with said rib, a plurality of anti-friction rolls mounted in said groove, said rolls having an annular V-shaped surface, adapted to cooperate with said rib for rotatably supporting said work table, means for securing a plurality of pieces of work on said table, a plurality of individual machines spaced around and adjacent to said work table, and means for indexing said work table to move said pieces of work to successive positions for being operated on by said ma chines.

a 8; A device for working metal comprising an annular work table having an annular V- shaped rib on the underside thereof, a supy porting member for said table having an an-Y ing V-shaped peripheral surfaces adapted to cooperate with said rib for rotatably supporting said work table, means orsecuring a plurality of pieces of work on sald'table, a plurality of individual machines spaced around y and adjacent to said work table, and means for indexing said work table to -move said pieces of work to successive positions for being operated on by said machines.

9. A device for working metal comprising a work holder movable in a predetermined path, means for securing a plurality of pieces of work on said holder, a machine mounted adjacent to said work holder, means for indexing said work holder to move said pieces of work to be successively operated' on by said machine, a source of power for said machine, a clutch between said source of power and said machine for rendering the latter inoperative, a bell crank having an arm engageable with said clutch, yieldable means for holding said clutch normally engaged, a rotatablecam engageable with said bell crank for releasing said clutch, and means engageable With said bell crank for holding said clutch released against the tension of said yieldable means.

10. A device for working metal comprising a work holder movable in a predetermined path, means for securing a plurality of pieces of work on said holder, a plurality of individual machines mounted adjacent to the path of said work holder, each of said machines having a source of power, a clutch between said source of power and said machine for rendering the latter inoperative, a bell crank having anarm engageable with said clutch, yieldable means for holding said clutch normally engaged, a rotatable cam engageable with saidbell crank for releasing said cutch, an electro-magnet adapted to engage said bell crank when the clutch has been releasedby the action of the cam, said magnet being adapted to hold the clutch-actuat-4 ing bell crank in released arrangement of the clutch against the tension of the yieldable means, and means for simultaneously engaging the clutches of the machines.

11. A device for working metal comprising a work holder movable in a predetermined path, means for securing a plurality Yof pieces of work on said holder, a plurality of individual machines mounted adjacent to said holder, each of said machines having a source of power, a clutch between said source of power and machine for rendering the latter inoperative, a bell crank having an arm engageable with said clutch for actuating the same, yieldable means engageable Awith said bell crank for urging said clutch into engaged arrangement, a rotatable cam engageable with an arm of said bell crank for raising said arm to release said clutch, an electro-magnet for engaging said cam actuated arm when in raised position to hold the clutch in released arrangement against the tension of said yieldable means, and means comprising a switch for deenergizing said magnets of the plurality of machines simultaneously, whereby the clutches are returned to engaged arrangement.

12. A device for working metal comprising a work holder movable in a predetermined path, means for securing a plurality of pieces of work on said holder, plurality of individual machines mounted in spaced relation adjacent to said work holder, means for indexing the work holder to move said pieces of work to successive positions for being operated on by said machines, means for locking said work holder in said successive positions, means forl causing said machines to become operative simultaneously, and a common control member for said indexing means, locking means, and controlling means including a valve adapted in one position to unlock the work carrier and in another position to lock the work holder, a valve adapted in one position to index the work holder and in another position to retur the indexing mechanism, a contact member for causing the machines to become operative, and a rotatable disc having an operating handle, said disc carrying a member engageable with said valves by rotation of the disc, and

a member carried by said disc engageable4 ing surplus lubricant, a well positioned cen-- trally of said base, a plurality of radial conduits leading from said gutter to said well, a tank containing a cutting compound and means for conducting the lubricant in said well to the tank aforesaid.

14. A metal working machine comprising a rotatable work table provided at spaced circumferential points with recessed portions, means for indexing the table throughout its rotation including a segmental locking element adapted to successively engage said recessed portions, a base upon which said locking element is pivotally mounted, and fiuid actuated means carried by said base for moving said locking element into and out of engagement with said recesses.

15. A metal working machine comprising a rotatable Work table provided at spaced circumferential points with recessed portions, means for indexing the table throughout its rotation including a supporting base positioned exterior of said table adjacent the periphery thereof, a segmental locking element pivotally mounted upon said base and adapted to successively engage the recessed portions of said work table, an arm integral with said locking element and a fluid actuated piston carried by said base and pivotally connected to said arm.`

16. A device for working metal comprising a work holder, movable ina predetermined path, means for securing a plurality of pieces of work onsaid holder, a machine mounted adjacent to said work holder, means for indexing said work holder` to move said pieces of work to be successively operated on by said machine, a source of power for said machine, a clutch` between said source of po-wer and said machine for rendering the latter inoperative, means for disengaging said clutch, means Vengageable with the aforesaid means for retaining the clutch in releasedposition, and contacts carried by the two last mentioned means respectively and adapted to close an electric circuit when the clutch is in released position for indicating the inoperative state of said machine.

17. A device for working metal comprising a work holder movable in a'predetermined path, means for securing a plurality of pieces of work on said holder, a machine mounted adjacent to said work holder, means for indexing said work holder to move said pieces of work to be successively operated on by said machine, a source o power for said machine, a clutch between sald source of power and said machine for rendering the latter inoperative, means for disengaging said clutch, means engageable with the aforesaid means for retaining the clutch in released position, and means operable when the clutch is in released position and controlled by the two last mentioned means for indicating'the inoperative state of said machine.

18. A device for working metal comprising a work holder movable in a predetermined path, means for securing a plurality of pieces of work on said holder, a plurality of in vidual machines mounted adjacent tothe path of said work holder, each of said `machines having a source of power, a clutch between said source of power and said machine for rendering the latter inoperative, a bell crank having an arm engageable with said clutch, yieldable means for holding said clutch normallyV engaged, a rotatable cam engageable with said bell crank for' releasing said clutch,

- an electro-magnet adapted to engage said table throughout its rotation,

bell crank when the clutch has been released by the action of the cam, a contact carried by said magnet, a second contact carried bysaid vbell crank arm and adapted. to engage the other contact for closing an' electric circuit to indicate the inoperative state of said machine, and means for simultaneously engaging the clutches of the machines.

19. A devicecfor working' metal including a rotatable work table provided at spaced points with lugs, means for indexing the means for successively moving thev table between the riage of the rnext succeeding `move the said pieces of 'successive points of indexing including a carslidable as a unit along the line of travel oi said table and provided with an armadaptefd to successively engage the lugs on said work table, and power operated means for controlling the movement of said carriage.

20. A; device Jfor working metal including a rotatable table provided at spaced points with depending lugs, each lug being provided with an inclined face and ashoulder,means for ..5 indexing the table throughout its rotation, means for successively moving the table between the successive points of indexing including a carriage provided with an arm, and power operated meansfor reciprocating said carriage whereby said arm will successively engage the shoulder portion of each ot said lugs and actuate said table during the orward movement ing adapted to of the carriage, said arm beslide over the inclined face lug during the return movement of said carriage.

21. A device for workin metal including a rotatable work table provi ed at spaced points along its bottom with depending lugs, means for indexing the table throughout its rotation,

`means for successively moving the table between the successive points of indexing including a carriage slidable as a unit below the table and provided with an upwardly extending arm engageable with said lugs, and power operated means for controlling the movement of said carriage.

22. A device for working metal including a rotatable table provided at spaced points with depending lugs, each lug being provided with an inclined face and a shoulder,means for indexing the table throughout its rotation, means for successively moving the table between thesuccessive points of indexing including a two part'carriage, links connecting said carriage parts, an arm carried by one of said parts and engageable with said lugs, and power operated means for reciprocating said carriage whereby said arm will successively engage the shoulder portion of each of said lugs and actuate said table during the forward movement yof the carriage, said arm being adapted to slide over the inclined face of the next succeeding lug during the return movement of said carriage. u

23. A device for working metal comprising 'a work holder movable in a predetermined path, means for securing a plurality ot pieces of work on said holder, a plurality of machines, means Jfor indexing the work holder to work to successive positions for being operated on by said machines, means for holding the work holder relatively stationary for a predetermined length of time at the poi ts of indexing, said machines being adapted to operate upon' the work during the-said stationary movements of the work holder, means for renderingeach machine inoperative upon ccgnpleton Lf j its/1an' In testimony whereof I aix my signature.

CHAUNCEY A. CORNELL. 

